Easy to load " Loading the grease gun is easy and convenient using a cartridge. Durable " The sturdy build of the product makes it long-lasting and prevents accidental spills. Jam-proof lever and spring action " Easy to operate without any hiccups. Comes with steel extension and 4 jaw coupler with ball check. Die cast head incorporats bulk loader and Air bleeder valve. Pressure 10000psi Type Lever Type (Heavy Duty with 3 way loading) Bulk Capacity 500cc Cartridge Capacity 400g